It's "Present arms!" for members of the 442nd Combat Team, Japanese-American fighting unit, as they salute their country's flag in a brief review held the day of their arrival at Camp Shelby, Miss.
This is a photo of Kori Cioca from an update article about The Invisible War documentary.
Found on https://www.pbs.org/independentlens/blog/invisible-war-updates/
Clip from Carolina Times (Durham, NC) edition published on March 4, 1989; via NC digital, https://newspapers.digitalnc.org/lccn/sn83045120/1989-03-04/ed-1/seq-1.pdf.
This letter by U.S. Army Captain Ralston Flemming from 1918 is about the efforts at Camp Jackson in South Carolina to assimilate immigrants into the American military. Some time after this letter was written, Congress passed legislation that alowed foreign-born soldiers to obtain expedited naturalization. About 300,000 immigrant soldiers gained citizenship through military service in the war.